61873685 has 4 divisors (see below), whose sum is σ = 74248428. Its totient is φ = 49498944.

The previous prime is 61873673. The next prime is 61873697. The reversal of 61873685 is 58637816.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61873673) and next prime (61873697).

It can be written as a sum of positive squares in 2 ways, for example, as 44849809 + 17023876 = 6697^2 + 4126^2 .

It is a cyclic number.

It is not a de Polignac number, because 61873685 - 2¹² = 61869589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6187364 + ... + 6187373.

It is an arithmetic number, because the mean of its divisors is an integer number (18562107).

Almost surely, 2^61873685 is an apocalyptic number.

It is an amenable number.

61873685 is a deficient number, since it is larger than the sum of its proper divisors (12374743).

61873685 is a wasteful number, since it uses less digits than its factorization.

61873685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12374742.

The product of its digits is 241920, while the sum is 44.

The square root of 61873685 is about 7865.9827739450. The cubic root of 61873685 is about 395.5201926993.

The spelling of 61873685 in words is "sixty-one million, eight hundred seventy-three thousand, six hundred eighty-five".